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Make LinkTagHelper JS down-level browser safe: 

- #2088
This commit is contained in:
damianedwards 2015-02-26 17:56:47 -08:00
parent 64ddbe0160
commit 6490b113d8
2 changed files with 10 additions and 7 deletions
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5
src/Microsoft.AspNet.Mvc.TagHelpers/js/LinkTagHelper_FallbackJavaScript.js
View File

@ -16,9 +16,12 @@
scriptElements = doc.getElementsByTagName("SCRIPT"),
// Find the meta tag before this script tag, that's the element we're going to test the CSS property on
meta = scriptElements[scriptElements.length - 1].previousElementSibling,
// Get the current style of the meta tag starting with standards-based API and falling back to <=IE8 API
metaStyle = (doc.defaultView && doc.defaultView.getComputedStyle) ? doc.defaultView.getComputedStyle(meta)
: meta.currentStyle,
i;
if (doc.defaultView.getComputedStyle(meta)[cssTestPropertyName] !== cssTestPropertyValue) {
if (metaStyle && metaStyle[cssTestPropertyName] !== cssTestPropertyValue) {
for (i = 0; i < fallbackHref.length; i++) {
doc.write('<link rel="stylesheet" href="' + fallbackHref[i] + '"/>');
}

12
test/Microsoft.AspNet.Mvc.FunctionalTests/Compiler/Resources/MvcTagHelpersWebSite.MvcTagHelper_Home.Link.html
View File

@ -37,27 +37,27 @@
<!-- Fallback to static href -->
<link href="/site.min.css" rel="stylesheet" data-extra="test" />
<meta name="x-stylesheet-fallback-test" class="hidden" /><script>!function(a,b,c){var d,e=document,f=e.getElementsByTagName("SCRIPT"),g=f[f.length-1].previousElementSibling;if(e.defaultView.getComputedStyle(g)[a]!==b)for(d=0;d<c.length;d++)e.write('<link rel="stylesheet" href="'+c[d]+'"/>')}("visibility","hidden",["\/site.css"]);</script>
<meta name="x-stylesheet-fallback-test" class="hidden" /><script>!function(a,b,c){var d,e=document,f=e.getElementsByTagName("SCRIPT"),g=f[f.length-1].previousElementSibling,h=e.defaultView&&e.defaultView.getComputedStyle?e.defaultView.getComputedStyle(g):g.currentStyle;if(h&&h[a]!==b)for(d=0;d<c.length;d++)e.write('<link rel="stylesheet" href="'+c[d]+'"/>')}("visibility","hidden",["\/site.css"]);</script>
<!-- Fallback to static href with no primary href -->
<link rel="stylesheet" data-extra="test" />
<meta name="x-stylesheet-fallback-test" class="hidden" /><script>!function(a,b,c){var d,e=document,f=e.getElementsByTagName("SCRIPT"),g=f[f.length-1].previousElementSibling;if(e.defaultView.getComputedStyle(g)[a]!==b)for(d=0;d<c.length;d++)e.write('<link rel="stylesheet" href="'+c[d]+'"/>')}("visibility","hidden",["\/site.css"]);</script>
<meta name="x-stylesheet-fallback-test" class="hidden" /><script>!function(a,b,c){var d,e=document,f=e.getElementsByTagName("SCRIPT"),g=f[f.length-1].previousElementSibling,h=e.defaultView&&e.defaultView.getComputedStyle?e.defaultView.getComputedStyle(g):g.currentStyle;if(h&&h[a]!==b)for(d=0;d<c.length;d++)e.write('<link rel="stylesheet" href="'+c[d]+'"/>')}("visibility","hidden",["\/site.css"]);</script>
<!-- Fallback to globbed href -->
<link href="/site.min.css" rel="stylesheet" data-extra="test" />
<meta name="x-stylesheet-fallback-test" class="hidden" /><script>!function(a,b,c){var d,e=document,f=e.getElementsByTagName("SCRIPT"),g=f[f.length-1].previousElementSibling;if(e.defaultView.getComputedStyle(g)[a]!==b)for(d=0;d<c.length;d++)e.write('<link rel="stylesheet" href="'+c[d]+'"/>')}("visibility","hidden",["\/site.css"]);</script>
<meta name="x-stylesheet-fallback-test" class="hidden" /><script>!function(a,b,c){var d,e=document,f=e.getElementsByTagName("SCRIPT"),g=f[f.length-1].previousElementSibling,h=e.defaultView&&e.defaultView.getComputedStyle?e.defaultView.getComputedStyle(g):g.currentStyle;if(h&&h[a]!==b)for(d=0;d<c.length;d++)e.write('<link rel="stylesheet" href="'+c[d]+'"/>')}("visibility","hidden",["\/site.css"]);</script>
<!-- Fallback to static and globbed href -->
<link href="/site.min.css" rel="stylesheet" data-extra="test" />
<meta name="x-stylesheet-fallback-test" class="hidden" /><script>!function(a,b,c){var d,e=document,f=e.getElementsByTagName("SCRIPT"),g=f[f.length-1].previousElementSibling;if(e.defaultView.getComputedStyle(g)[a]!==b)for(d=0;d<c.length;d++)e.write('<link rel="stylesheet" href="'+c[d]+'"/>')}("visibility","hidden",["\/site.css","\/sub\/site2.css"]);</script>
<meta name="x-stylesheet-fallback-test" class="hidden" /><script>!function(a,b,c){var d,e=document,f=e.getElementsByTagName("SCRIPT"),g=f[f.length-1].previousElementSibling,h=e.defaultView&&e.defaultView.getComputedStyle?e.defaultView.getComputedStyle(g):g.currentStyle;if(h&&h[a]!==b)for(d=0;d<c.length;d++)e.write('<link rel="stylesheet" href="'+c[d]+'"/>')}("visibility","hidden",["\/site.css","\/sub\/site2.css"]);</script>
<!-- Fallback to static and globbed href should dedupe -->
<link href="/site.min.css" rel="stylesheet" data-extra="test" />
<meta name="x-stylesheet-fallback-test" class="hidden" /><script>!function(a,b,c){var d,e=document,f=e.getElementsByTagName("SCRIPT"),g=f[f.length-1].previousElementSibling;if(e.defaultView.getComputedStyle(g)[a]!==b)for(d=0;d<c.length;d++)e.write('<link rel="stylesheet" href="'+c[d]+'"/>')}("visibility","hidden",["\/site.css"]);</script>
<meta name="x-stylesheet-fallback-test" class="hidden" /><script>!function(a,b,c){var d,e=document,f=e.getElementsByTagName("SCRIPT"),g=f[f.length-1].previousElementSibling,h=e.defaultView&&e.defaultView.getComputedStyle?e.defaultView.getComputedStyle(g):g.currentStyle;if(h&&h[a]!==b)for(d=0;d<c.length;d++)e.write('<link rel="stylesheet" href="'+c[d]+'"/>')}("visibility","hidden",["\/site.css"]);</script>
<!-- Fallback to static and globbed href with exclude -->
<link href="/site.min.css" rel="stylesheet" data-extra="test" />
<meta name="x-stylesheet-fallback-test" class="hidden" /><script>!function(a,b,c){var d,e=document,f=e.getElementsByTagName("SCRIPT"),g=f[f.length-1].previousElementSibling;if(e.defaultView.getComputedStyle(g)[a]!==b)for(d=0;d<c.length;d++)e.write('<link rel="stylesheet" href="'+c[d]+'"/>')}("visibility","hidden",["\/site.css","\/sub\/site2.css"]);</script>
<meta name="x-stylesheet-fallback-test" class="hidden" /><script>!function(a,b,c){var d,e=document,f=e.getElementsByTagName("SCRIPT"),g=f[f.length-1].previousElementSibling,h=e.defaultView&&e.defaultView.getComputedStyle?e.defaultView.getComputedStyle(g):g.currentStyle;if(h&&h[a]!==b)for(d=0;d<c.length;d++)e.write('<link rel="stylesheet" href="'+c[d]+'"/>')}("visibility","hidden",["\/site.css","\/sub\/site2.css"]);</script>
<!-- Fallback to globbed href that doesn't exist -->
<link href="/site.min.css" rel="stylesheet" data-extra="test" />